RU2000131680A - METHOD FOR CASTING FROM WORKING METAL WITH A SECTION CLOSE TO THE READY FOR RENT, AND A DEVICE FOR ITS IMPLEMENTATION - Google Patents

Claims (20)

1. The method of casting rectangular billets with a cross section close to the finished rolled metal, in particular steel, and subsequent rolling of a continuously cast billet, with a supply material tank, through the outlet nozzle of which molten metal is fed to the upper branch of the conveyor belt on which it hardens and is fed for further deformation into the rolling mill, including the following operations:
a) before casting
aa) roughly set the point of supply of molten metal to the conveyor belt,
ab) set the conveyor speed of the conveyor belt depending on the desired thickness of the rolling and rolling speed of the rolling stand,
b) during casting
ba) measure the position of full solidification of the metal workpiece located on the conveyor belt,
bb) measure the temperature of the rental in the area of the rolling stand and
bc) use the position of full solidification and the temperature of the rolled products as control values to determine the actual position of the point of supply of molten metal exiting the material supply tank to the conveyor belt.  2. The method according to p. 1, characterized in that the thickness of the metal billet located on the conveyor belt is measured and used to control the flow rate of molten metal exiting the tank to supply material.  3. The method according to p. 1, characterized in that they measure the speed of the conveyor belt and use it to control the flow of molten metal leaving the material supply tank.  4. The method according to any one of paragraphs. 1 - 3, characterized in that take into account the geodetic height of the metal in the tank for supplying material when controlling the flow of molten metal leaving the tank for supplying material.  5. The method according to p. 1, characterized in that the heat removal from the metal billet located on the conveyor belt is taken into account when adjusting the position of the container for supplying material.  6. A device for casting rectangular billets with a cross section close to finished metal, in particular steel, and subsequent rolling of a continuously cast billet, including a container for supplying material, having an output nozzle, a horizontally located belt conveyor and at least one rolling stand located behind it, characterized in that the container (11) for supplying material is connected to movable elements (22), which provide the ability to move it in a horizontal, coaxial main axis of the tape of the conveyor (31) to the direction towards the transport of the workpiece (S) or against it, and that the container for feeding material is connected to the translational movement mechanism (21), which is connected to the control device (41) for automatic regulation, to which the measuring elements are connected ( 51) for measuring the position of complete solidification of the workpiece (S) and measuring elements (52) for measuring the temperature of the rolled product.  7. The device according to claim 6, characterized in that an element (61) is provided, with which it is possible to control the flow of metal through the output nozzle (13) of the container (11) for supplying material.  8. The device according to claim 7, characterized in that the element (61) is made in the form of an adjustable closing element (62) and / or a vacuum device (65).  9. The device according to p. 6, characterized in that the movable elements (22) are connected to the tank (11) for feeding the material by wheels (14) that roll along the rails (23).  10. The device according to claim 6, characterized in that the movable elements (22) are connected to the container (11) for feeding the material by the sliding elements (15) that interact with the guide (24).  11. The device according to claim 6, characterized in that the movable elements (22) are made of levers (25) having hinges (26), which are made as a translational movement mechanism so that when the container (11) is moved horizontally to supply material, the ability to move its outlet nozzle (13) in a certain area at a constant distance from the upper branch (32) of the conveyor belt (31).  12. The device according to p. 6, characterized in that the movable elements (22) are cylinder-piston blocks (27), which are connected to the control device (49) so that the horizontal movement of the container (11) for supplying material provides the ability to move the output its nozzle outlet (13) in a certain area at a constant distance from the upper branch (32) of the conveyor belt (31).  13. The device according to claim 6, characterized in that the translational movement mechanism (21) is a piston-cylinder block (28).  14. The device according to p. 13, characterized in that the cylinder-piston block (28) is made in the form of a cylinder of uniform stroke, one end of which is connected through a spacer rod (16) to a container (11) for supplying material.  15. The device according to claim 6, characterized in that the translational movement mechanism (21) is made in the form of an electric drive (29), which is connected through an endless belt (17) to a container (11) for supplying material.  16. The device according to any one of paragraphs. 6 - 15, characterized in that the movable elements (22) of the container (11) for feeding the material and the translational movement mechanism (21) connected to it are located on the stand (18), which has its own drive for moving the belt axis coaxially (I) conveyor (31).  17. The device according to claim 6, characterized in that the container (11) for supplying material is made in the form of a vacuum ladle, which has a loading chamber (12) into which the melt is fed.  18. The device according to claim 6, characterized in that a protective chamber (71) is provided, which, when supplied to the conveyor belt (31) and during transportation along it, closes at least the free surfaces of the workpiece (S).  19. The device according to p. 18, characterized in that the protective chamber (71) has a cover (72), which is made in the form of blinds (73), which are connected at one end to the output nozzle (13) of the container (11) for supplying material and do not create obstacles to its movement, and at the other end are connected to the winding device (74).  20. Device according to any one of p. 18 or 19, characterized in that the protective chamber (71) is connected to the gas supply device (81).